对于标准textareas，我使用这个plugin创建一个占位符。我怎样才能扩展tinymce以便以这种方式工作。
例如，从textarea属性读取默认值，然后在用户关注iframe时清除。
与CKEditor类似：http://alfonsoml.blogspot.com.es/2012/04/placeholder-text-in-ckeditor.html
如果没有占位符属性，我收到错误。
我结合了这个答案的代码：jQuery hasAttr checking to see if there is an attribute on an element来获取下面修改的代码来处理这个场景：
setup: function(ed) {
// Set placeholder
var tinymce_placeholder = $('#'+ed.id);
var attr = tinymce_placeholder.attr('placeholder');
// For some browsers, `attr` is undefined; for others,
// `attr` is false. Check for both.
if (typeof attr !== 'undefined' && attr !== false) {
var is_default = false;
ed.onInit.add(function(ed) {
// get the current content
var cont = ed.getContent();
// If its empty and we have a placeholder set the value
if(cont.length == 0){
ed.setContent(tinymce_placeholder.attr("placeholder"));
// Get updated content
cont = tinymce_placeholder.attr("placeholder");
}
// convert to plain text and compare strings
is_default = (cont == tinymce_placeholder.attr("placeholder"));
// nothing to do
if (!is_default){
return;
}
});
ed.onMouseDown.add(function(ed,e) {
// replace the default content on focus if the same as original placeholder
if (is_default){
ed.setContent('');
}
});
}
}
我重构了Tom Duke的代码，用它的jquery插件处理TinyMCE4
$('textarea.tinymce').tinymce({
script_url: _base + '/assets/js/tinymce/tinymce.min.js',
theme: "modern",
setup: function(editor) {
// Set placeholder
var placeholder = $('#' + editor.id).attr('placeholder');
if (typeof placeholder !== 'undefined' && placeholder !== false) {
var is_default = false;
editor.on('init', function() {
// get the current content
var cont = editor.getContent();
// If its empty and we have a placeholder set the value
if (cont.length === 0) {
editor.setContent(placeholder);
// Get updated content
cont = placeholder;
}
// convert to plain text and compare strings
is_default = (cont == placeholder);
// nothing to do
if (!is_default) {
return;
}
})
.on('focus', function() {
// replace the default content on focus if the same as original placeholder
if (is_default) {
editor.setContent('');
}
})
.on('blur', function() {
if (editor.getContent().length === 0) {
editor.setContent(placeholder);
}
});
}
}
});
上面的答案对我来说不起作用，但这里是我的（对我来说）工作代码基于上面的答案并使用onchange_callback。希望它可以帮到某人！
onchange_callback : function(ed){
var tinymce_placeholder = $('#' + ed.id).attr("placeholder");
setTimeout(function () {
var content = ed.getContent().replace(/<p>|<\/p>/g, '');
if (content == '') {
ed.setContent(tinymce_placeholder);
}
}, 200);
},
setup: function (ed) {
// Set placeholder
var tinymce_placeholder = $('#' + ed.id);
if (tinymce_placeholder.length) {
ed.onInit.add(function (ed) {
var cont = ed.getContent();
if (cont.length == 0) {
ed.setContent(tinymce_placeholder.attr("placeholder"));
}
});
ed.onMouseDown.add(function (ed, e) {
var content = ed.getContent().replace(/<p>|<\/p>/g, '');
if (content == tinymce_placeholder.attr("placeholder")) {
ed.setContent('');
}
});
}
}
试试这段代码：
为tinyMCE内联编辑器添加占位符文本：
$scope.ContentOptions = {
setup: function(editor) {
editor.on('init', function () {
// Default classes of tinyMCE are a bit weird
// I add my own class on init
// this also sets the empty class on the editor on init
tinymce.DOM.addClass( editor.bodyElement, 'content-editor' );
});
// You CAN do it on 'change' event, but tinyMCE sets debouncing on that event
// so for a tiny moment you would see the placeholder text and the text you you typed in the editor
// the selectionchange event happens a lot more and with no debouncing, so in some situations
// you might have to go back to the change event instead.
editor.on('selectionchange', function () {
if ( editor.getContent() === "" ) {
tinymce.DOM.addClass( editor.bodyElement, 'empty' );
} else {
tinymce.DOM.removeClass( editor.bodyElement, 'empty' );
}
});
}}
视图中的HTML部分
<div data-placeholder="Content..." id="post-content-editor" ui-tinymce="ContentOptions" ng-model="newPostContentModel"></div>
最后用CSS创建占位符文本（它从data-placeholder =“Content ...”获取它，但你可以直接在css中完成它
.content-editorr:before {
display: none;
}
.content-editor.empty:before {
display: block;
position: absolute;
content: attr(data-placeholder);
}
我在github上找到了它：
https://github.com/angular-ui/ui-tinymce/issues/197
我尝试了很多针对tinymce的占位符解决方案，并发现这个解决方案非常有用，因为它满足占位符的所有要求。我认为这是最好的解决方案，
对于tinymce 4，我在没有定义ed.onInit的事件中遇到了问题。 tinymce 4使用ed.on（'event'，callback）代替。这是我的实施。我还使用焦点而不是mousedown作为清除编辑器时要监听的事件，因为mousdown由于某种原因不起作用。
setup : function(ed) {
// Set placeholder
var tinymce_placeholder = $('#'+ed.id);
var attr = tinymce_placeholder.attr('placeholder');
// For some browsers, `attr` is undefined; for others,
// `attr` is false. Check for both.
if (typeof attr !== 'undefined' && attr !== false) {
var is_default = false;
ed.on('init' , function(ed) {
// get the current content
var cont = ed.target.getContent();
// If its empty and we have a placeholder set the value
if(cont.length == 0){
ed.target.setContent(tinymce_placeholder.attr("placeholder"));
// Get updated content
cont = tinymce_placeholder.attr("placeholder");
}
// convert to plain text and compare strings
is_default = (cont == tinymce_placeholder.attr("placeholder"));
// nothing to do
if (!is_default){
return;
}
});
ed.on('focus', function(ed,e) {
// replace the default content on focus if the same as original placeholder
if (is_default){
ed.target.setContent('');
}
});
}
}
希望这有助于任何有其他答案问题的人
我找到了另一种方法，它不会弄乱textarea的内容。我喜欢这样，所以我不必有特殊条件阻止用户提交仅占位符的内容。写的是here，但我添加了onclick方法，以便标签可点击 - 没有这个，用户必须点击<label>下面或它的侧面。这对TinyMCE 4很有用。
.tinyMCEPlaceholder {
top: 45px;
left: 9px;
z-index: 1;
color: #bbbbbb;
position: absolute;
cursor:text;
}
<div id="holder">
<label for="tinymce" onclick="tinymce.execCommand('mceFocus',false,'area_id');">Type your article</label>
<textarea id="comments" id="area_id" class="tinymce" name="comments" cols="40" rows="10"></textarea>
</div>
<!-- or -->
<div id="holder">
<label for="tinymce" onclick="tinymce.get('area_id').fire('focus',{},false);">Type your article</label>
<textarea id="comments" id="area_id" class="tinymce" name="comments" cols="40" rows="10"></textarea>
</div>
// setup
setup : function(ed) {
/* toggle all labels that have the attr 'tinymce' */
ed.on('init', function() {
if(ed.getContent() != '') {
$('label[for="tinymce"]').hide();
}
$(ed.getDoc()).contents().find('body').focus(function(){
$('label[for="tinymce"]').hide();
});
$(ed.getDoc()).contents().find('body').blur(function(){
if(ed.getContent() == '') {
$('label[for="tinymce"]').show();
}
});
});
},
Gaurav的解决方案运行正常，但需要进行一些更改。我使用这个修改使它几乎完美：
editor.on("init", function(){
tinymce.DOM.addClass( editor.bodyElement, 'content-editor' );
if ( editor.getContent() === "" ) {
tinymce.DOM.addClass( editor.bodyElement, 'empty' );
var pseudoBeforeHeight = window.getComputedStyle(editor.bodyElement, ':before').height;
tinymce.DOM.setStyles( editor.bodyElement, { 'height': pseudoBeforeHeight } );
}
});